// Copyright 2024 The Godel Rescheduler Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package protection

import (
	"github.com/kubewharf/godel-rescheduler/pkg/godel-rescheduler/cache/policies"

	v1 "k8s.io/api/core/v1"
)

const (
	ExcludeFromReschedulingAnnotationKey string = "godel.bytedance.com/exclude-from-rescheduling"
	ExcludeFromReschedulingTrue          string = "true"
)

type protectionStore struct{}

var _ policies.PolicyStore = &protectionStore{}

func newProtectionStore() policies.PolicyStore {
	return &protectionStore{}
}

func (ps *protectionStore) CheckMovementItem(previousNode, targetNode string, instance *v1.Pod) policies.CheckResult {
	if instance.Annotations[ExcludeFromReschedulingAnnotationKey] == ExcludeFromReschedulingTrue {
		return policies.MovedInstanceError
	}
	return policies.Pass
}

func (ps *protectionStore) AssumePod(pod *v1.Pod) {}

func (ps *protectionStore) RemovePod(pod *v1.Pod) {}
